Can you please elaborate? That wasn't real clear.
It's in my post history... somewhere, if anyone wants dig through all that.
Take every aspect of playing you can think of -- scales, chords/arps, octaves, etc. Some overlap. Some things are completely different ways of thinking -- ex. physical individual finger motions vs. thinking in terms of chords.
Make a routine out of that. If you do that daily, it will build up some technique.
It avoids relying on literature, when the lit might only focus on one aspect -- maybe right hand emphasized over the left for scale work, maybe certain keys favored, etc.
Downsides... It's not literature. And there's no end. You can eventually, slowly, push yourself to the point that you don't recover as much after practice. You can overpractice. You can slowly wear yourself down instead of building up.
There's no variance in it if it's the same thing every day. That's good and bad. Bad in that it's the stuff that isn't used fades and if you're overpracticing there's less chance, less rest, for recovery. So some variations or several routines might be good. But then that can slow progress if you don't keep working in the same direction.
Actual control would be the ultimate goal. That takes a lot of brain power though. The routine covers all aspects, whatever you determine is "all." I'm still confused about whether I'm working most efficiently/effectively for the time put in. The routine definitely is more compressed for physical work compared to some literature.
Another negative -- It's gets old, dry. Reading or watching tv or a movie help. You can easily do more repetitions that way. But it also introduces some sloppiness in the long run since you're paying as much attention. And then it's up in the air whether focusing on what you're doing helps progress or not.
Another likely negative -- Getting trapped by the routine being habit.
A general outline of what I've got for a routine...
Scales, major and minor -- all 30
Arpeggios, same... major and minor, all 30
Loud chords, full hands / quiet chords, full hands slow and faster
Wrist swirls/wrist-driven to keep the wrist working
Thumb work to keep the thumb working.
Scales in sevenths -- All 30 maj/min. Can vary the position -- root, first, second, third. Blocked.
Scales in sevenths as arpeggios. I'm going around the circle of fifths in each key. All 30 maj/min.
Scratching the keys with each finger. All five keys pressed, one finger at a time. Then no keys pressed, one finger at a time.
Finger lifts -- All five keys pressed, one at a time. No keys, one at a time.
Repeating thirds in a static five finger position.
Repeating 1232 patterns in a static five finger position.
Fast two octaves scales for speed -- major up, minor down.
Fast two octave arpeggios for speed Mm ud.
Some I've forgotten....
Scales in thirds.
Whole tone scales.
Static five finger position, thirds up and down. Or, 1212 3232 1212
Another... Static five finger position, Hold down 1, do 2345432; Hold 2, 1345431; Hold 3, etc.
That takes maybe a little over an hour to an hour and a half to do. You can add more repetitions to beef it up. Go faster. Play quieter. It was enough to start tearing my forearms/hands down, maybe touching on tendinitis.... almost twenty years ago now.